Quadruple-impulse pump.



P. CHRISTMAN. QUADRUPLB IMPULSE PUMP. APPLICATION FILED 1120.9. 1912.

Patented Mar. 17', 1914.

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P. CHRISTMAN. QUADRUPLB IMPULSB PUMP.

APPLICATION rum 920.9, 1912.

Patented Mar. 17, 1914.

2 SHEETS-SHEET 2.

STATES" PETER CHRISTY/IAN, OF GREEN BAY, WISCONSIN.

QUADRUPLE-IMPULSE PUMP.

Speciiicaton of Letters Patent.

Patented Mar. 17, 1914.

To all whom it may concern.'

Be it known that I, PETER CHRIS'LMAN, a citizen of the United States, residing at Green Bay, in the county of Brown and State of `\/Visconsin, have invented certain new and usetul Improvements in Quadruple-Impulse Pumps; and l do declare the following to be a full, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pumps, and more especially to those having a hollow piston rod; and the object of the same is to produce a pump for use in deep Artesian wells and the like and in which each movement of the piston rod up or down produces two soealled impulses so that one complete movement back and forth of the piston rod will. produce tour impulses--resultiug in a rapid extraction ot the water :trom the woll or other place being pumped out. Deep well pumps oi' today are ahnost exclusively double acting so that there is one impulse or discharge oit water on the upward stroke and another on the downward stroke ot' the piston rod. A recent invention provides 'lor a triple-acting pump which gives one impulse on the downward stroke of the piston rod and two on its upward stroke. By my present invention two impulses are given on the downward stroke and two more on the upward strokeeach upward stroke discharging the t'ull capacity of the two compartments less the slippage and leakage and the volume ot the sucker rod in each compartment, and each downward stroke discharging the :full capacity ott the other compartments less the slippage and the volume of the sucker rod in one con'ipartment, the excess amount oit' water discharged on the downward stroke over that on the upward stroke compensating partly 'for the weight oit the sucker rod, the buckets, etc.

rllhe details ot this invention are carried out in a manner well typified on the acco1npanying drawings, in which the well casing of the Artesian well is omitted and only the lower end of the suspension pipe therein is shown. ln the following specification 'I have described ball valves excepting at one point, but do not wish to be limited to the specific type of valve which is to be used. Also the specification gives my preferred dctails oit construction, as shown in the drawings wherein- Figure l is a side elevation ot the lower end of the suspension pipe and the entire length of the pump cylinder. Fig. 2 is a vertical section on the line DWD of Fig. 8, and Fig. Q is a vertical transverse section on the line E--E oit Fig. t3, these two views making up a complete section through the parts shown in Fig. l. Figs. 3 and l are cross sections on the lines 2li-23 and l-1l respectively o't Fig. Q. Figs. 5 and (3 arc cross sections on the .lines :Sw-5 and (SWG respectively of Fig. Qf.

The suspension pipe l in the present instance is connected with the pump cylinder by threading a `[lange 3 of the upper valve diaphragm l onlo said pipe at its lower end and into said cylinder at its upper end, as best seen in Fig. L). This or some equivalent detachable iorm of connection should be employed, so that the entire pump cylinder with its contained mechanism may be removed from the suspension pipe when desired. As above suggested, the well casing is not shown because the invention would work in an Artesian or other well which had no casing, provided the pump cylinder is totally submerged 1n the water as will be readily imderstood. The pump cylinder 2, in turn, is preferably made in two sections, whereof the lowermost numbered 5 is connected to the uppermost munbered 2 in any suitable manner, but preferably by the means hereinafter described. The lower end of the entire pump cylinder (that is, in the present instance the lower end of the lower section 5) is closed by a plug having an inlet port 7 which is controlled by an upwardly opening inlet valve 8 mounted within a bonnet 9 which prevents its displacement; and by preference this plug is screwed into the lower end so that it also may be removed to gain access to the interior oit the cylinder. rlhere is another inlet opening l() in the side oit the upper cylinder section 9., and still a third inlet between the contiguous ends of the two sections as will be described below. The inlet 10 is cored inward and downward through the diaph 'agm 4, and its lower and inner end is controlled by an inlet check valve 1l which is held from displacement by a suitable retainer 12. The section line of F ig. 4t is so taken through Fig. 9. that the former view shows but three of these inlets 10, but by preference there are four of them and of ample size, and` there are therefore four inlet check valves 11. Alternated with the latter are four discharge valves 13 which close downwardly onto ports 14 through the diaphragm 4 and are retained by pins 15 0r other suitable devices which connect the wall of the upper diaphragm 4 with a sleeve 16 at its center, said sleeve closely surrounding the sucker rod 17 and being provided with suitable packing 18 at top and bottom. Said sucker rod is tubular as shown, and preferably made in two sections, the uppermost numbered 17 being connected by a coupling 19 with the ordinary pump rod 20, and the coupling being of an open type so that. water fiowing upward through the sucker rod may pass into the suspension pipe 1. By preference the upper section 17 is connected with the lower section 21 by threading their contiguous ends and screwing them into a sleeve 22 which forms part of what might well be called the upper bucket 23. The body of the latter is shown in horizontal section in Fig. 5 and in vertical section at about the center ot Fig. 2. Around its sleeve it is provided with four chambers 24, each communicating by a port 25 through said sleeve with the space between the contiguous ends of the suckera'od sections 17 and 21; below each chamber is a valve seat 26 closed by a downwardly closing valve 27; and above each chamber in turn is preferably an opening of considerable size closed by a plug 28-especially it the valve V27 is a ball as shown. Around the periphery of this bucket is suitable packing 29 so that it may make elo-se contact with the inner wall of the cylinder 2 as it is moved upward and downward, for obviously its connection with the sucker rod and the connection of the latter with the pump rod 2O causes these movements.

Next below the upper bucket is disposed what may well be called the lower dia phragm 30, and by preference the upper and lower ends ot this member are threaded at 31 into the lower end of the upper cylinder section 2 and the upper end of the lower cylinder section 5 respectively, whereby the diaphragm serves as a means for connecting said sections, while their contiguous ends may be lett slightly spaced as at 32. Opposite this space inlet chambers 33 are provided in the diaphragm which communicate through ports with the spaces both above and below the diaphragm. The upper ports form valve seats 34 for valves 35 while the lower ports 36 form valve seats for valves 37, said upper and lower valves being respectively connected by valve stems 38 which are of such length that when one valve is seated the other is unseated as shown in Fig. 2. Near its center this diaphragm is elongated upward and downward as shown, and carries packing 39 surrounding the lower section 21 of the sucker rod. At the lower end of the latter is what may well be called the lower bucket 40, here shown as having a. threaded sleeve 41 at its center screwed onto the lower end of the sucker rod and held in place by a check nut 42, although any other suitable type of connection might be employed. Furthermore, this bucket may well be made in two members screwed together as indicated in Fig. 2, and each surrounded by packing 43. However, the precise details of construction are not essential to the successful operation of my invention. vWithin this bucket (whether made in members or in one casting) are chambers 44, each connected by a port 45 with the space at the center of the bucket which space communicates with the open lower end of the sucker rod, and at the bot,- tom of each chamber is a valve seat 46 adapted to be closed by a valve 47, while a similar seat 48 opens through the upper' portion or member of the bucket directly above the seat 46 and is adapted to be closed by the same valve when the latter rises. The construction of the valve is immaterial, excepting it should be such that when the entire bucket ascends the valve will close upon the lower seat and when the entire bucket descends the valve will close upward against the upper seat, but in neither case will the valve close the port 45.

To understand the operation of this improved pump, it will be advisable to indicate certain sof-called compartments by reference letters in Fig. 2 as follows: A designates the space between the upper diaphragm and the upper bucket, B the space between the upper bucket and the lower diaphragm, C is the space between the latter and the lower bucket, and D is the space between said lower bucket and above the plug at the eXtreme lower end of the cylinder. 0n the downward stroke of the pump rod and hence of the sucker rod and the two buckets carried thereby, the upper bucket being closed to the space A acts as a piston to draw water inward through the inlet openings 10 as the check valves 11 will permit, with the result that the compartment A is filled with water. It will be understood that at this time the valve 13 is closed by the weight of the water above it within the pipe 1. The downward stroke of the sucker rod also moves the lower bucket 40 downward, and the water in the compartment l). which cannot escape because the valve 8 is then closed, lifts the valves 47 and flows upward through the ports 46, then inward through the ports 45, and upward through the sucker rod`the seating of these valves 47 against the ports 48 above them preventing the water from getting into the compartment C. Such closure ot' the valve seats 48 also converts the lower bucket, at this time, into a piston, so that its descent draws water through the inlet 82 and downward through the ports 3G into the compartment C. This action of the valves 37, through the stems 38, closes the valves 35 so that the water already in the compartment B cannot escape, and the descent of the sucker rod and the upper bucket therefore causes the unseating of the valves 27 so that the water in this compartment B flows upward through the ports 26 and inward through the ports 25 and into the sucker rod. Hence the descending stroke of the latter produces two so-called impulses, one ejecting the water from the compartment .D and the other from the compartment B up the tubular sucker rod, whence it flowsl through the coupling 19 into the pipe 1 and eventually out the latter to the point of use. Also thc descent of the sucker rod simultaneously draws water into the compartments A and C. On a reverse movement or the ascent of the sucker rod, the inlet valves 11 close and the water in the compartment A is raised by the upper bucket 223 which being closed acts in the nature of a piston, so that it passes through the valves 13 directly into the lower end of the pipe 1. The rise of the upper bucket 23 closes its valves 27 upon their seats Z6 as shown in Fig. 2, and therefore draws water into the compartment B through the inlets 32 because the double valves 35)-37 stand at the opposite position from that shown in Fig. 2. Such being a fact, the upper end of the compartment C is closed, and the ascent of the lower bucket causes its valves 47 to drop onto their lower seats 4G as shown in Fig. 2, and the water in the compartment C is ejected downward, over said valves, inward through the ports 45, and upward through the sucker rod. This action converts the lower bucket practically into a piston, and in its ascent it unscats the inlet valve 7 and draws water into the lower chamber or compartment D. Thus the rise or ascent of the piston rod, the sucker rod, and the parts carried by the latter, produces two so-called impulses, whereof one is the ejection of the water within the compartment. A into the pipe 1 and the other is the ejection of the water in the compartment C into the lower end of the sucker rod; and simultaneously this movement of the pump rod draws a charge of water into the compartment I) and another into the compartment B. It follows that, as first above herein stated, with the exception of slippage and leakage and the volume of the sucker rod in each compartment, each downward stroke of the pump discharges the full capacity of two compartments and each upward stroke the full capacity of two other compartmentsfthus resulting in the delivery of four impulses upward through the pipe 1 at each complete movement of the pump up and down. If the hollow coupling 19 is employed, the water driven upward through the tubular sucker rod is immediately conveyed into the suspension pipe 1 and by the latter it is carried to the surface of the earth in a well known manner.

As suggested above, I do not wish to .be limited to the specific form of valves herein shown and described. It is essential, however, that the valves 47 in the lower bucket be double-seated, so that they may do double duty--acting as discharge valves for both the compartments C and D. It will also be noted that the valves 3:3-37 and their connecting stems 3S are in e'llect double acting as well-the heads 35 serving as check valves for the compartment B while the heads 37 are unseated, and the latter serving as check valves for the compartments C while the valves 35 are unseated.

The plugs Q8 above the valves 27 may or may not be employed as desired, but I prefer to employ them in order that access may be had to the valves.

Other details of construction will suggest themselves to the manufacturer and may be employed or adopted without dcparting from the spirit of my invention.

The exact sizes and proportions of parts are obviously immaterial.

What is claimed as new is:

l. In a quadruple impulse pump, the combination with the barrel having upper and lower series of inlets through its wall, check valves for the inlets of the upper series, a diaphragm fast within the barrel within the upper series of inlets and having a port communicating with the space above it, a downwardly closing valve for said port, a lower diaphragm fast within the barrel opposite the lower series of inlets and having radial chambers communicating with the latter and ports leading from said chambers to the spaces above and below this diaphragm, and for each pair of such ports a doubleacting valve adapted to close one port and open the other; of a tubular sucker rod reciprocating vertically through said diaphragm and having inlets above and below the lowermost diaphragm, a bucket slidably mounted within said. barrel and including a piston secured to said rod above the uppermost inlet of the lower diaphragm and a passage leading from the latter downward and opening through the space below saidf bucket, a downwardly closing valve in this passage; another bucket secured to the rod below the lowermost diaphragm and having a chamber communicating with the lower end of the rod and ports opening from said chamber to the spaces above and below this bucket, and valves within the chamber adapted to close the ports alternately on the ascent and descent of said rod.

2. n a quadruple impulse pump, the combination with the barrel having upper and lower series of inlets through its wall and an inlet at its lower end, check valves for the latter and for the inlets of the upper series, a diaphragm fast within the barrel within the upper series of inlets and having a port communicating with the space above it, a downwardly closing valve for said port, a lower diaphragm fast within the barrel opposite the lower series of inlets and having radial chambers communicating with the latter and ports leading from said chambers to the spaces above and below this diaphragm, and 'for each pair of such ports a double-acting valve adapted to close one port and open the other; of a tubular sucker rod reciprocating vertically through said diaphragms and having inlets above and below the lowermost diaphragm7 a bucket slidably mounted within said barrel and including a piston secured to said rod above its uppermost inlet and a passage leading from the latter downward and opening through the space below said bucket, a downwardly closing valve in this passage; another ybucket secured to the rod below the lowermost diaphragm and having a chamber communicating with its lower inlet and ports opening from said chamber to the spaces above and below this bucket, and a valve within the chamber adapted to close the ports alternately on the ascent and descent of said rod.

3. in a pump of the class described, the combination with the suspension pipe externally threaded at its lower end, and the reciprocating pump rod therein; of the pump barrel internally threaded at its upper end and having two sets of inlets in its wall, diaphragms fast within said barrel opposite these inlets, the uppermost diaphragm engaging the threads at the upper end of said barrel and having a flange engaging the threads at the lower end of said suspension pipe, check valves in the diaphragms over said inlets, a tubular sucker rod moving thro-ugh said diaphragms and having inlet openings, an open coupling connecting its upper end with the lower end of said pump rod, a plurality of buckets 'fast on said rod and reciprocating within said barrel, and valves in the buckets, substantially as described.

4. In a pump of the class described, the combination with the barrel made in two spaced sections internally threaded at their contiguous ends and each section having an inlet, check valves for said inlets, a diaphragm externally threaded at its upper and lower ends to engage and connect the contiguous ends osaid sections and provided with radial chambers between its threaded portions and ports leading both upward and downward from said chambers, the ports having valve seats, valves for these seats opening away from said chambers, and stems passing through said chambers and through said ports and connecting the valves in pairs so as to hold one open when the other rests upon its seat; of a suckery rod reciprocating vertically through said diaphragm, buckets thereon above and below the diaphragm, and valves in the buckets.

5. The combination with a sucker rod made in two sections externally threaded at their contiguous ends; of a bucket having' a threaded sleeve at its center adapted to ensaid ends of the rod and pierced with radial ports opposite the space between such ends and provided with chambers with which said ports communicate, a valve seat at the lower side of each chamber' communieating with the space Ybelow the bucket, a valve normally closing against said. seat, and a plug removably closing the upper portion of the bucket above said valve, for the purpose set forth.

6, The combination with a sucker rod section externally threaded at its lower end; of a bucket having a threaded sleeve at its center adapted to engage said threads and pierced with radial ports and provided with chambers with which said ports communicate, a valve seat at the lower side of each chamber communicating with the space below the bucket, a valve normally closing against said seat, and a plug removably closing the upper portion of the bucket above said valve, for the purpose set forth.

In testimony whereof l have hereunto set my hand in presence of two subscribing witnesses.

PETER. CHRISTMAN. l/Vitnesses JOHN J. CoLIGNoN, Hazel. DENnssEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

